mirror of
https://github.com/containers/youki
synced 2024-05-05 23:26:32 +02:00
66 lines
1.9 KiB
Rust
66 lines
1.9 KiB
Rust
use std::path::Path;
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use anyhow::{Context, Result};
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use super::Controller;
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use crate::common::{self, ControllerOpt};
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use oci_spec::runtime::LinuxNetwork;
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pub struct NetworkClassifier {}
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impl Controller for NetworkClassifier {
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type Resource = LinuxNetwork;
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fn apply(controller_opt: &ControllerOpt, cgroup_root: &Path) -> Result<()> {
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log::debug!("Apply NetworkClassifier cgroup config");
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if let Some(network) = Self::needs_to_handle(controller_opt) {
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Self::apply(cgroup_root, network)
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.context("failed to apply network classifier resource restrictions")?;
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}
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Ok(())
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}
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fn needs_to_handle<'a>(controller_opt: &'a ControllerOpt) -> Option<&'a Self::Resource> {
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controller_opt.resources.network().as_ref()
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}
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}
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impl NetworkClassifier {
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fn apply(root_path: &Path, network: &LinuxNetwork) -> Result<()> {
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if let Some(class_id) = network.class_id() {
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common::write_cgroup_file(root_path.join("net_cls.classid"), class_id)?;
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}
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Ok(())
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}
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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use crate::test::{create_temp_dir, set_fixture};
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use oci_spec::runtime::LinuxNetworkBuilder;
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#[test]
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fn test_apply_network_classifier() {
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let tmp = create_temp_dir("test_apply_network_classifier")
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.expect("create temp directory for test");
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set_fixture(&tmp, "net_cls.classid", "0").expect("set fixture for classID");
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let id = 0x100001u32;
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let network = LinuxNetworkBuilder::default()
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.class_id(id)
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.priorities(vec![])
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.build()
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.unwrap();
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NetworkClassifier::apply(&tmp, &network).expect("apply network classID");
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let content =
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std::fs::read_to_string(tmp.join("net_cls.classid")).expect("Read classID contents");
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assert_eq!(id.to_string(), content);
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}
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}
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